Worst air pollution Longford, today and tomorrow
Today (16 July): Air quality in Longford is fair. AQI, PM2.5, NO2, and O3 are fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 AM (NO2: 32.5/100).
Tomorrow (17 July 2026): Air quality in Longford is fair. All pollutants stay as today. Pollution peaks around 3:00 AM (NO2: 33.7/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Longford's air quality benefits from its central midlands position, with vehicle traffic on the N4 and N5 the primary local source amid generally good wind dispersal across the flat, boggy countryside.
Today - 16 July | Pollution peaks at 01:00
AQI:
Fair
32.5/100
PM2.5 (fine particles):
Fair
20.9/100
PM10 (coarse particles):
Good
7.5/100
NO2 (nitrogen dioxide):
Fair
32.5/100
O3 (ozone):
Fair
28.3/100
SO2 (sulfur dioxide):
Good
10.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
17.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 03:00
AQI:
Fair
33.7/100
PM2.5 (fine particles):
Fair
24.8/100
PM10 (coarse particles):
Good
9.2/100
NO2 (nitrogen dioxide):
Fair
33.7/100
O3 (ozone):
Fair
27.1/100
SO2 (sulfur dioxide):
Good
10.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Good
19.9/100
Pollen forecast in Longford
View pollen forecastFrequently Asked Questions
Is air quality bad in Longford right now?
On 16 July 2026, overall air quality in Longford is fair. AQI is the main air quality indicator at 32.5/100. Pollution peaks around 1:00 AM (NO2: 32.5/100).
Will air quality be worse tomorrow in Longford?
On 17 July 2026, air quality conditions in Longford will be similar to today, with AQI forecast at fair at 33.7/100. Pollution peaks around 3:00 AM (NO2: 33.7/100).
When is air pollution at its worst in Longford?
Longford experiences a distinct seasonal pattern in air quality, tied to its riverside setting near the River Camlin in the midlands. Turf and coal smoke can build up on still, cold winter nights, while the wetter, windier months of the rest of the year usually keep the air clean. Away from the town centre, conditions tend to stay a little cleaner even on the stillest winter nights.
Are air quality levels in Longford based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Want to see air quality forecasts for other cities in Ireland?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app